Call 855-660-4261 with your lawn & garden questions every Saturday from 8:06am to 10:00am ET. Then listen to Mort answer your questions. Or email anytime at questions@themagicgarden.com
Listen to the weekly archive 24 hours a day 7 days a week on demand.
Keyword Search Results for:
Cactus

4 Found

Question: 375-3410
We just planted 6 inch cactus in soil that is half peat and half sand. When do we fertilize? Joe, Key Largo, FL

Mort's Answer:
There is enough fertility with the peat. In the desert, cacti grow in straight sand. Being able to plant citrus and cacti outdoors makes this New Englander green with envy.

back to top




Question: 775-2612
My 25 year old cactus is not doing that well. I have it in an eight inch pot. Any suggestions? Bob, Norwich, CT

Mort's Answer:
You will need to transplant this gem into a ten inch clay pot. Use good potting soil cut with a third coarse sand. Take the plant and tip it upside down. Knock the edge of the pot on something solid. It will come out whole. Scratch the outside go the root to allow a mix with the new soil. Do not fertilize until August. A tablespoon of bonemeal or granular 5-10-10 fertilizer will give the flowers a boost, when winter arrives.

back to top




Question: 1012-3713
We recently transplanted a four foot high spiny Cactus into a larger pot. We used a good quality potting soil. It keeps bending over. We have a rock on the bottom. What can we do? Roy, Norwich, CT

Mort's Answer:
Good soils are not useful for cacti. You need to replant it into a 12 inch pot using a soil medium of 50% coarse sand. You will not need the rock. The sand will help the drainage and provide a better hold for the roots. You can use three stakes until the plant has established itself in its new clay pot. Cactus requires little if any water in the winter. Water once after repotting.

back to top




Question: 1244-1415
I have a 10 year Cereus cactus that has not bloomed since I bought it. I give it strong light and cool temps around 50. It is about four feet tall now and is in a clay pot. I fertilize it regularly with a liquid fertilizer and water it every month. When will it bloom? I was told by the lady at the nursery in Connecticut where I got it that it is a night blooming cactus. Mike, Long Branch, NJ

Mort's Answer:
I hope that this does not keep you up nights much longer. You are giving it too much TLC. Nobody is feeding and watering the Cacti in the desert and they will bloom. Liquid fertilizer has too much concentrated nitrogen for cacti. Selenicereus grandiflora has a vanilla scent and can be overpowering. It has aerial roots that can help support its prickly stems. They have very large white flowers. It will bloom briefly in June or July. It should not be given water throughout the winter so it can rest in dormancy. I would try for 40 degrees during this rest period. This plant will produce a ten inch flower and is worth the the attention to temperature and cycles. There are other Cereus cacti that require the same serious care. Peruvian Cereus or Giant Club will reach the ceiling of most houses with blue knobby ribbed stems but rarely blooms indoors. Pachycereus is the erect spiny ribbed cactus that can bloom at anytime of the year after a cool dormant season. It will start blooming in the evening at the top of the single stem and go to noon the next day. P. pecten-aboriginum will grow to 12 feet and is the easiest to grow.

back to top